Results 31 to 40 of about 1,220,192 (373)
The formation of brown dwarfs [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractWe argue that brown dwarfs (BDs) and planemos form by the same mechanisms as low-mass hydrogen-burning stars, but that as one moves to lower and lower masses, an increasing fraction of these objects is formed by fragmentation of the outer parts (R ≳ 100 AU) of protostellar accretion discs around more massive primary protostars, which in turn ...
A. P. Whitworth +6 more
openaire +2 more sources
A high binary fraction for the most massive close-in giant planets and brown dwarf desert members [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Stellar multiplicity is believed to influence planetary formation and evolution, although the precise nature and extent of this role remain ambiguous.
C. Fontanive +5 more
semanticscholar +1 more source
BROWN DWARF DISKS WITH ALMA [PDF]
The Astrophysical Journal, 2014 15 pages, 10 figures, accepted for publication in ...
Aleks Scholz +8 more
openaire +7 more sources
HATS-70b: A 13 MJ Brown Dwarf Transiting an A Star [PDF]
Astronomical Journal, 2018 We report the discovery of HATS-70b, a transiting brown dwarf at the deuterium burning limit. HATS-70b has a mass of and a radius of , residing in a close-in orbit with a period of days. The host star is a A star rotating at , enabling us to characterize
G. Zhou +25 more
semanticscholar +1 more source
The Astronomical Journal, 2023 Excess infrared flux from white dwarf stars is likely to arise from a dusty debris disk or a cool companion. In this work, we present near-infrared spectroscopic observations with Keck/MOSFIRE, Gemini/GNIRS, and Gemini/Flamingos-2 of seven white dwarfs ...
Dylan Owens +9 more
doaj +1 more source
Atmospheric circulation of exoplanets
地球与行星物理论评, 2023 To date, more than 5000 exoplanets and more than 2000 brown dwarfs have been confirmed, which shows rich diversities in many aspects. With the rapid growth of the planet family, both observational and theoretical research on exoplanet atmosphere is ...
Yuchen Lian, Yongyun Hu
doaj +1 more source
WASP-128b: a transiting brown dwarf in the dynamical-tide regime [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Massive companions in close orbits around G dwarfs are thought to undergo rapid orbital decay due to runaway tidal dissipation. We report here the discovery of WASP-128b, a brown dwarf discovered by the WASP survey transiting a G0V host on a $2.2 ...
V. Hodžić +17 more
semanticscholar +1 more source
The Astronomy and Astrophysics Review, 2014 Review accepted for publication by The A&A Review (Spinger), 13 Figures, 53 pages, 233 references (Figure 1 updated and typos corrected)
Helling, Christiane, Casewell, Sarah
openaire +5 more sources
The brown dwarf desert as a consequence of orbital migration [PDF]
, 2001 We show that the dearth of brown dwarfs in short-period orbits around Solar-mass stars - the brown dwarf desert - can be understood as a consequence of inward migration within an evolving protoplanetary disc.
Armitage +37 more
core +3 more sources
An L Band Spectrum of the Coldest Brown Dwarf [PDF]
, 2018 The coldest brown dwarf, WISE 0855, is the closest known planetary-mass, free-floating object and has a temperature nearly as cold as the solar system gas giants.
C. Morley +12 more
semanticscholar +1 more source